Pontiac G5 2010 Owner's Manual page 351

5. Position the jack lift head at the jack location
nearest the flat tire. The front location is about
8 inches (20 cm) behind the front wheel opening.
The rear location is about 4 inches (10 cm) in front
of the rear wheel opening.
6. Raise the jack head until it fits firmly in the vehicle's
frame, where the notch is located, nearest the
flat tire.
7. Put the compact spare tire near the flat tire.
WARNING:
{
Getting under a vehicle when it is jacked up is
dangerous. If the vehicle slips off the jack, you
could be badly injured or killed. Never get under a
vehicle when it is supported only by a jack.
6-87